How Often Do You Change Hvac Air Filter. A general rule of thumb for pleated air filters with a MERV rating of 8 learn about MERV ratings in 6 below or higher is to replace your filter every 90 days. 1-inch and 2-inch air filters should be replaced about every one to three months.
However that depends on the filters thickness. 1 furnace filters should be replaced every 1-3 months. An HVAC expert weighs in on what you need to know about changing your air filters from why its important and how often to do it to.
A good rule of thumb is to change your air filter every two months when you have one pet in the house.
Scheduling filter replacements with the start of each new season is an easy way to remember Change 4-inch filters every six months summer and winter. Another great technique is to change your filter the day your utility bill arrives every month so your routine is consistent. Excess dust is another factor that can shorten the life of your furnace filter. The standard time recommended to change a high-quality air filter is at least once every three months.
